A) Neoprene
B) Buna-S
C) PMMA
D) Glyptal
Correct Answer: D
Solution :
Glyptal is a condensation or step growth polymer of ethylene glycol and phthalic acid. \[nHOC{{H}_{2}}C{{H}_{2}}OH+n\]
Neoprene, buna-S and PMMA are chain growth polymers.
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